If you don’t want to talk then why go to therapy? Like if you won’t answer questions that your therapist asks you then it seems like you’re wasting your time. Just because you have bipolar (assuming you do) doesn’t mean you necessarily need therapy. But you have to be committed to therapy for it to help you. If you don’t want the help then there’s no reason to go in my opinion.

Not trying to be mean just saying if you want to have someone to talk to therapy is good but if you’ve got nothing to say then I wouldn’t go. However you can also use therapy to learn coping skills to help you when you are feeling out of sorts. Have you ever tried DBT? It’s less of a talk therapy and more skills based. It might suit you better.